OASIS, together with
NIST, have released two test suites
for XML DOM Level 1 implementations.

The two suites, in ECMAScript and Java, were developed by NIST and
submitted to OASIS. The ECMAScript suite is interactive, providing
as-it-happens information on test passes and fails. There are over 800
EMCAScript tests, which cover all fundamental, extended and HTML
interfaces to the DOM.

The Java suite contains over 200 tests, but doesn't cover the
HTML interface.